Difference between revisions of "JRC386"
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Latest revision as of 12:04, 21 October 2011
| Gain | 1 | 8 | Gain |
| In - | 2 | 7 | Bypass |
| In + | 3 | 6 | V+ |
| Ground | 4 | 5 | Out |
The LM386 is a low-power amplifier chip. It is able to directly drive a small speaker, and is thus used in a number of battery-powered practice amp designs.
Voltage reference trick
The LM386 has a self-centering output voltage. In other words, if there's no signal at it inputs, its output sits at half the supply voltage. Because of this, the 386 can be used as a source of a buffered bias voltage in stompbox circuits.
Used in
- Little Gem - portable amp
- Ruby Amp - portable amp
- Smokey Amp - portable amp
- Uglyface - distortion/noisemaker
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